Abstract: A fast settling AGC system includes a “fast settle” comparator that facilitates fast settling of strong radio receiver output signals from a maximum to an intermediate voltage level at the start of each transmission burst, and a “normal” AGC comparator that further settles the output signal from the intermediate voltage level to a desired target output voltage level at a slower “normal” rate. The gain control signal components generated by both the “fast settle” comparator and the “normal” AGC comparator are summed and applied to the gain control terminal of a variable gain amplifier. The gain control signal component generated by the “fast settle” comparator has a higher current level than the gain control signal component generated by the “normal” comparator, but is terminated when receiver output signal drops to the intermediate voltage level.

Abstract: A slice level reference generator and method for performing improved data slicing operations when gaps are present in a data stream is disclosed that involves applying a nominal reference signal to the comparator the during signal gaps. In one embodiment, a receiver circuit includes a slice level detector and a comparator that operate in a conventional manner, and control circuitry that utilizes a signal detector and a switch to store a slice level reference signal generated by the slice level detector during a first signal burst, and to apply the stored reference signal to the comparator during signal gaps. In one embodiment a timer circuit is used to detect signal gaps. In another embodiment a predetermined fixed reference signal is applied to the comparator during signal gaps.

Abstract: A slice level reference generator and method for performing improved data slicing operations when gaps are present in a data stream is disclosed that involves applying a nominal reference signal to the comparator the during signal gaps. In one embodiment, a receiver circuit includes a slice level detector and a comparator that operate in a conventional manner, and control circuitry that utilizes a signal detector and a switch to store a slice level reference signal generated by the slice level detector during a first signal burst, and to apply the stored reference signal to the comparator during signal gaps. In one embodiment a timer circuit is used to detect signal gaps. In another embodiment a predetermined fixed reference signal is applied to the comparator during signal gaps.

Abstract: A fast settling AGC system includes a “fast settle” comparator that facilitates fast settling of strong radio receiver output signals from a maximum to an intermediate voltage level at the start of each transmission burst, and a “normal” AGC comparator that further settles the output signal from the intermediate voltage level to a desired target output voltage level at a slower “normal” rate. The gain control signal components generated by both the “fast settle” comparator and the “normal” AGC comparator are summed and applied to the gain control terminal of a variable gain amplifier. The gain control signal component generated by the “fast settle” comparator has a higher current level than the gain control signal component generated by the “normal” comparator, but is terminated when receiver output signal drops to the intermediate voltage level.